Huh, I’m actually surprised.
For all times I tested game or saw anyone play it, I never had issue with player-enemy collision block. I specifically made character faster than all enemies to avoid issue of not been able to get away from enemies.
As for attack control, yep, its intentional. Personal preference, I just like one-handed gameplay of hoard survivors. Damaging enemies with “stick” felt wrong, so only blade deals damage. Same for area behind blade. If you miss - you miss, try again.
Over all - it’s just not your game, which is fine.
“Game for everyone is game for noone”. Arrowhead Game Studios